#include<stdio.h>
void fun(int x,int y);
int main()
{
    int x=5,y=3;
    fun(x,y);
    printf("%d,%d\n",x,y);
    return 0;
}
    void fun(int x,int y)
    {
        x=x+y;
        y=x-y;
        x=x-y;
        printf("%d,%d\n",x,y);
    }